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-rw-r--r--Utilities/cmjsoncpp/src/lib_json/json_writer.cpp690
1 files changed, 690 insertions, 0 deletions
diff --git a/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp b/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp
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+++ b/Utilities/cmjsoncpp/src/lib_json/json_writer.cpp
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+// Copyright 2011 Baptiste Lepilleur
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
+#if !defined(JSON_IS_AMALGAMATION)
+#include <json/writer.h>
+#include "json_tool.h"
+#endif // if !defined(JSON_IS_AMALGAMATION)
+#include <utility>
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <sstream>
+#include <iomanip>
+#include <math.h>
+
+#if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below
+#include <float.h>
+#define isfinite _finite
+#define snprintf _snprintf
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER >= 1400 // VC++ 8.0
+// Disable warning about strdup being deprecated.
+#pragma warning(disable : 4996)
+#endif
+
+namespace Json {
+
+static bool containsControlCharacter(const char* str) {
+ while (*str) {
+ if (isControlCharacter(*(str++)))
+ return true;
+ }
+ return false;
+}
+
+std::string valueToString(LargestInt value) {
+ UIntToStringBuffer buffer;
+ char* current = buffer + sizeof(buffer);
+ bool isNegative = value < 0;
+ if (isNegative)
+ value = -value;
+ uintToString(LargestUInt(value), current);
+ if (isNegative)
+ *--current = '-';
+ assert(current >= buffer);
+ return current;
+}
+
+std::string valueToString(LargestUInt value) {
+ UIntToStringBuffer buffer;
+ char* current = buffer + sizeof(buffer);
+ uintToString(value, current);
+ assert(current >= buffer);
+ return current;
+}
+
+#if defined(JSON_HAS_INT64)
+
+std::string valueToString(Int value) {
+ return valueToString(LargestInt(value));
+}
+
+std::string valueToString(UInt value) {
+ return valueToString(LargestUInt(value));
+}
+
+#endif // # if defined(JSON_HAS_INT64)
+
+std::string valueToString(double value) {
+ // Allocate a buffer that is more than large enough to store the 16 digits of
+ // precision requested below.
+ char buffer[32];
+ int len = -1;
+
+// Print into the buffer. We need not request the alternative representation
+// that always has a decimal point because JSON doesn't distingish the
+// concepts of reals and integers.
+#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__) // Use secure version with
+ // visual studio 2005 to
+ // avoid warning.
+#if defined(WINCE)
+ len = _snprintf(buffer, sizeof(buffer), "%.16g", value);
+#else
+ len = sprintf_s(buffer, sizeof(buffer), "%.16g", value);
+#endif
+#else
+ if (isfinite(value)) {
+ len = snprintf(buffer, sizeof(buffer), "%.16g", value);
+ } else {
+ // IEEE standard states that NaN values will not compare to themselves
+ if (value != value) {
+ len = snprintf(buffer, sizeof(buffer), "null");
+ } else if (value < 0) {
+ len = snprintf(buffer, sizeof(buffer), "-1e+9999");
+ } else {
+ len = snprintf(buffer, sizeof(buffer), "1e+9999");
+ }
+ // For those, we do not need to call fixNumLoc, but it is fast.
+ }
+#endif
+ assert(len >= 0);
+ fixNumericLocale(buffer, buffer + len);
+ return buffer;
+}
+
+std::string valueToString(bool value) { return value ? "true" : "false"; }
+
+std::string valueToQuotedString(const char* value) {
+ if (value == NULL)
+ return "";
+ // Not sure how to handle unicode...
+ if (strpbrk(value, "\"\\\b\f\n\r\t") == NULL &&
+ !containsControlCharacter(value))
+ return std::string("\"") + value + "\"";
+ // We have to walk value and escape any special characters.
+ // Appending to std::string is not efficient, but this should be rare.
+ // (Note: forward slashes are *not* rare, but I am not escaping them.)
+ std::string::size_type maxsize =
+ strlen(value) * 2 + 3; // allescaped+quotes+NULL
+ std::string result;
+ result.reserve(maxsize); // to avoid lots of mallocs
+ result += "\"";
+ for (const char* c = value; *c != 0; ++c) {
+ switch (*c) {
+ case '\"':
+ result += "\\\"";
+ break;
+ case '\\':
+ result += "\\\\";
+ break;
+ case '\b':
+ result += "\\b";
+ break;
+ case '\f':
+ result += "\\f";
+ break;
+ case '\n':
+ result += "\\n";
+ break;
+ case '\r':
+ result += "\\r";
+ break;
+ case '\t':
+ result += "\\t";
+ break;
+ // case '/':
+ // Even though \/ is considered a legal escape in JSON, a bare
+ // slash is also legal, so I see no reason to escape it.
+ // (I hope I am not misunderstanding something.
+ // blep notes: actually escaping \/ may be useful in javascript to avoid </
+ // sequence.
+ // Should add a flag to allow this compatibility mode and prevent this
+ // sequence from occurring.
+ default:
+ if (isControlCharacter(*c)) {
+ std::ostringstream oss;
+ oss << "\\u" << std::hex << std::uppercase << std::setfill('0')
+ << std::setw(4) << static_cast<int>(*c);
+ result += oss.str();
+ } else {
+ result += *c;
+ }
+ break;
+ }
+ }
+ result += "\"";
+ return result;
+}
+
+// Class Writer
+// //////////////////////////////////////////////////////////////////
+Writer::~Writer() {}
+
+// Class FastWriter
+// //////////////////////////////////////////////////////////////////
+
+FastWriter::FastWriter()
+ : yamlCompatiblityEnabled_(false), dropNullPlaceholders_(false),
+ omitEndingLineFeed_(false) {}
+
+void FastWriter::enableYAMLCompatibility() { yamlCompatiblityEnabled_ = true; }
+
+void FastWriter::dropNullPlaceholders() { dropNullPlaceholders_ = true; }
+
+void FastWriter::omitEndingLineFeed() { omitEndingLineFeed_ = true; }
+
+std::string FastWriter::write(const Value& root) {
+ document_ = "";
+ writeValue(root);
+ if (!omitEndingLineFeed_)
+ document_ += "\n";
+ return document_;
+}
+
+void FastWriter::writeValue(const Value& value) {
+ switch (value.type()) {
+ case nullValue:
+ if (!dropNullPlaceholders_)
+ document_ += "null";
+ break;
+ case intValue:
+ document_ += valueToString(value.asLargestInt());
+ break;
+ case uintValue:
+ document_ += valueToString(value.asLargestUInt());
+ break;
+ case realValue:
+ document_ += valueToString(value.asDouble());
+ break;
+ case stringValue:
+ document_ += valueToQuotedString(value.asCString());
+ break;
+ case booleanValue:
+ document_ += valueToString(value.asBool());
+ break;
+ case arrayValue: {
+ document_ += '[';
+ int size = value.size();
+ for (int index = 0; index < size; ++index) {
+ if (index > 0)
+ document_ += ',';
+ writeValue(value[index]);
+ }
+ document_ += ']';
+ } break;
+ case objectValue: {
+ Value::Members members(value.getMemberNames());
+ document_ += '{';
+ for (Value::Members::iterator it = members.begin(); it != members.end();
+ ++it) {
+ const std::string& name = *it;
+ if (it != members.begin())
+ document_ += ',';
+ document_ += valueToQuotedString(name.c_str());
+ document_ += yamlCompatiblityEnabled_ ? ": " : ":";
+ writeValue(value[name]);
+ }
+ document_ += '}';
+ } break;
+ }
+}
+
+// Class StyledWriter
+// //////////////////////////////////////////////////////////////////
+
+StyledWriter::StyledWriter()
+ : rightMargin_(74), indentSize_(3), addChildValues_() {}
+
+std::string StyledWriter::write(const Value& root) {
+ document_ = "";
+ addChildValues_ = false;
+ indentString_ = "";
+ writeCommentBeforeValue(root);
+ writeValue(root);
+ writeCommentAfterValueOnSameLine(root);
+ document_ += "\n";
+ return document_;
+}
+
+void StyledWriter::writeValue(const Value& value) {
+ switch (value.type()) {
+ case nullValue:
+ pushValue("null");
+ break;
+ case intValue:
+ pushValue(valueToString(value.asLargestInt()));
+ break;
+ case uintValue:
+ pushValue(valueToString(value.asLargestUInt()));
+ break;
+ case realValue:
+ pushValue(valueToString(value.asDouble()));
+ break;
+ case stringValue:
+ pushValue(valueToQuotedString(value.asCString()));
+ break;
+ case booleanValue:
+ pushValue(valueToString(value.asBool()));
+ break;
+ case arrayValue:
+ writeArrayValue(value);
+ break;
+ case objectValue: {
+ Value::Members members(value.getMemberNames());
+ if (members.empty())
+ pushValue("{}");
+ else {
+ writeWithIndent("{");
+ indent();
+ Value::Members::iterator it = members.begin();
+ for (;;) {
+ const std::string& name = *it;
+ const Value& childValue = value[name];
+ writeCommentBeforeValue(childValue);
+ writeWithIndent(valueToQuotedString(name.c_str()));
+ document_ += " : ";
+ writeValue(childValue);
+ if (++it == members.end()) {
+ writeCommentAfterValueOnSameLine(childValue);
+ break;
+ }
+ document_ += ',';
+ writeCommentAfterValueOnSameLine(childValue);
+ }
+ unindent();
+ writeWithIndent("}");
+ }
+ } break;
+ }
+}
+
+void StyledWriter::writeArrayValue(const Value& value) {
+ unsigned size = value.size();
+ if (size == 0)
+ pushValue("[]");
+ else {
+ bool isArrayMultiLine = isMultineArray(value);
+ if (isArrayMultiLine) {
+ writeWithIndent("[");
+ indent();
+ bool hasChildValue = !childValues_.empty();
+ unsigned index = 0;
+ for (;;) {
+ const Value& childValue = value[index];
+ writeCommentBeforeValue(childValue);
+ if (hasChildValue)
+ writeWithIndent(childValues_[index]);
+ else {
+ writeIndent();
+ writeValue(childValue);
+ }
+ if (++index == size) {
+ writeCommentAfterValueOnSameLine(childValue);
+ break;
+ }
+ document_ += ',';
+ writeCommentAfterValueOnSameLine(childValue);
+ }
+ unindent();
+ writeWithIndent("]");
+ } else // output on a single line
+ {
+ assert(childValues_.size() == size);
+ document_ += "[ ";
+ for (unsigned index = 0; index < size; ++index) {
+ if (index > 0)
+ document_ += ", ";
+ document_ += childValues_[index];
+ }
+ document_ += " ]";
+ }
+ }
+}
+
+bool StyledWriter::isMultineArray(const Value& value) {
+ int size = value.size();
+ bool isMultiLine = size * 3 >= rightMargin_;
+ childValues_.clear();
+ for (int index = 0; index < size && !isMultiLine; ++index) {
+ const Value& childValue = value[index];
+ isMultiLine =
+ isMultiLine || ((childValue.isArray() || childValue.isObject()) &&
+ childValue.size() > 0);
+ }
+ if (!isMultiLine) // check if line length > max line length
+ {
+ childValues_.reserve(size);
+ addChildValues_ = true;
+ int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]'
+ for (int index = 0; index < size; ++index) {
+ writeValue(value[index]);
+ lineLength += int(childValues_[index].length());
+ }
+ addChildValues_ = false;
+ isMultiLine = isMultiLine || lineLength >= rightMargin_;
+ }
+ return isMultiLine;
+}
+
+void StyledWriter::pushValue(const std::string& value) {
+ if (addChildValues_)
+ childValues_.push_back(value);
+ else
+ document_ += value;
+}
+
+void StyledWriter::writeIndent() {
+ if (!document_.empty()) {
+ char last = document_[document_.length() - 1];
+ if (last == ' ') // already indented
+ return;
+ if (last != '\n') // Comments may add new-line
+ document_ += '\n';
+ }
+ document_ += indentString_;
+}
+
+void StyledWriter::writeWithIndent(const std::string& value) {
+ writeIndent();
+ document_ += value;
+}
+
+void StyledWriter::indent() { indentString_ += std::string(indentSize_, ' '); }
+
+void StyledWriter::unindent() {
+ assert(int(indentString_.size()) >= indentSize_);
+ indentString_.resize(indentString_.size() - indentSize_);
+}
+
+void StyledWriter::writeCommentBeforeValue(const Value& root) {
+ if (!root.hasComment(commentBefore))
+ return;
+
+ document_ += "\n";
+ writeIndent();
+ std::string normalizedComment = normalizeEOL(root.getComment(commentBefore));
+ std::string::const_iterator iter = normalizedComment.begin();
+ while (iter != normalizedComment.end()) {
+ document_ += *iter;
+ if (*iter == '\n' && *(iter + 1) == '/')
+ writeIndent();
+ ++iter;
+ }
+
+ // Comments are stripped of newlines, so add one here
+ document_ += "\n";
+}
+
+void StyledWriter::writeCommentAfterValueOnSameLine(const Value& root) {
+ if (root.hasComment(commentAfterOnSameLine))
+ document_ += " " + normalizeEOL(root.getComment(commentAfterOnSameLine));
+
+ if (root.hasComment(commentAfter)) {
+ document_ += "\n";
+ document_ += normalizeEOL(root.getComment(commentAfter));
+ document_ += "\n";
+ }
+}
+
+bool StyledWriter::hasCommentForValue(const Value& value) {
+ return value.hasComment(commentBefore) ||
+ value.hasComment(commentAfterOnSameLine) ||
+ value.hasComment(commentAfter);
+}
+
+std::string StyledWriter::normalizeEOL(const std::string& text) {
+ std::string normalized;
+ normalized.reserve(text.length());
+ const char* begin = text.c_str();
+ const char* end = begin + text.length();
+ const char* current = begin;
+ while (current != end) {
+ char c = *current++;
+ if (c == '\r') // mac or dos EOL
+ {
+ if (*current == '\n') // convert dos EOL
+ ++current;
+ normalized += '\n';
+ } else // handle unix EOL & other char
+ normalized += c;
+ }
+ return normalized;
+}
+
+// Class StyledStreamWriter
+// //////////////////////////////////////////////////////////////////
+
+StyledStreamWriter::StyledStreamWriter(std::string indentation)
+ : document_(NULL), rightMargin_(74), indentation_(indentation),
+ addChildValues_() {}
+
+void StyledStreamWriter::write(std::ostream& out, const Value& root) {
+ document_ = &out;
+ addChildValues_ = false;
+ indentString_ = "";
+ writeCommentBeforeValue(root);
+ writeValue(root);
+ writeCommentAfterValueOnSameLine(root);
+ *document_ << "\n";
+ document_ = NULL; // Forget the stream, for safety.
+}
+
+void StyledStreamWriter::writeValue(const Value& value) {
+ switch (value.type()) {
+ case nullValue:
+ pushValue("null");
+ break;
+ case intValue:
+ pushValue(valueToString(value.asLargestInt()));
+ break;
+ case uintValue:
+ pushValue(valueToString(value.asLargestUInt()));
+ break;
+ case realValue:
+ pushValue(valueToString(value.asDouble()));
+ break;
+ case stringValue:
+ pushValue(valueToQuotedString(value.asCString()));
+ break;
+ case booleanValue:
+ pushValue(valueToString(value.asBool()));
+ break;
+ case arrayValue:
+ writeArrayValue(value);
+ break;
+ case objectValue: {
+ Value::Members members(value.getMemberNames());
+ if (members.empty())
+ pushValue("{}");
+ else {
+ writeWithIndent("{");
+ indent();
+ Value::Members::iterator it = members.begin();
+ for (;;) {
+ const std::string& name = *it;
+ const Value& childValue = value[name];
+ writeCommentBeforeValue(childValue);
+ writeWithIndent(valueToQuotedString(name.c_str()));
+ *document_ << " : ";
+ writeValue(childValue);
+ if (++it == members.end()) {
+ writeCommentAfterValueOnSameLine(childValue);
+ break;
+ }
+ *document_ << ",";
+ writeCommentAfterValueOnSameLine(childValue);
+ }
+ unindent();
+ writeWithIndent("}");
+ }
+ } break;
+ }
+}
+
+void StyledStreamWriter::writeArrayValue(const Value& value) {
+ unsigned size = value.size();
+ if (size == 0)
+ pushValue("[]");
+ else {
+ bool isArrayMultiLine = isMultineArray(value);
+ if (isArrayMultiLine) {
+ writeWithIndent("[");
+ indent();
+ bool hasChildValue = !childValues_.empty();
+ unsigned index = 0;
+ for (;;) {
+ const Value& childValue = value[index];
+ writeCommentBeforeValue(childValue);
+ if (hasChildValue)
+ writeWithIndent(childValues_[index]);
+ else {
+ writeIndent();
+ writeValue(childValue);
+ }
+ if (++index == size) {
+ writeCommentAfterValueOnSameLine(childValue);
+ break;
+ }
+ *document_ << ",";
+ writeCommentAfterValueOnSameLine(childValue);
+ }
+ unindent();
+ writeWithIndent("]");
+ } else // output on a single line
+ {
+ assert(childValues_.size() == size);
+ *document_ << "[ ";
+ for (unsigned index = 0; index < size; ++index) {
+ if (index > 0)
+ *document_ << ", ";
+ *document_ << childValues_[index];
+ }
+ *document_ << " ]";
+ }
+ }
+}
+
+bool StyledStreamWriter::isMultineArray(const Value& value) {
+ int size = value.size();
+ bool isMultiLine = size * 3 >= rightMargin_;
+ childValues_.clear();
+ for (int index = 0; index < size && !isMultiLine; ++index) {
+ const Value& childValue = value[index];
+ isMultiLine =
+ isMultiLine || ((childValue.isArray() || childValue.isObject()) &&
+ childValue.size() > 0);
+ }
+ if (!isMultiLine) // check if line length > max line length
+ {
+ childValues_.reserve(size);
+ addChildValues_ = true;
+ int lineLength = 4 + (size - 1) * 2; // '[ ' + ', '*n + ' ]'
+ for (int index = 0; index < size; ++index) {
+ writeValue(value[index]);
+ lineLength += int(childValues_[index].length());
+ }
+ addChildValues_ = false;
+ isMultiLine = isMultiLine || lineLength >= rightMargin_;
+ }
+ return isMultiLine;
+}
+
+void StyledStreamWriter::pushValue(const std::string& value) {
+ if (addChildValues_)
+ childValues_.push_back(value);
+ else
+ *document_ << value;
+}
+
+void StyledStreamWriter::writeIndent() {
+ /*
+ Some comments in this method would have been nice. ;-)
+
+ if ( !document_.empty() )
+ {
+ char last = document_[document_.length()-1];
+ if ( last == ' ' ) // already indented
+ return;
+ if ( last != '\n' ) // Comments may add new-line
+ *document_ << '\n';
+ }
+ */
+ *document_ << '\n' << indentString_;
+}
+
+void StyledStreamWriter::writeWithIndent(const std::string& value) {
+ writeIndent();
+ *document_ << value;
+}
+
+void StyledStreamWriter::indent() { indentString_ += indentation_; }
+
+void StyledStreamWriter::unindent() {
+ assert(indentString_.size() >= indentation_.size());
+ indentString_.resize(indentString_.size() - indentation_.size());
+}
+
+void StyledStreamWriter::writeCommentBeforeValue(const Value& root) {
+ if (!root.hasComment(commentBefore))
+ return;
+ *document_ << normalizeEOL(root.getComment(commentBefore));
+ *document_ << "\n";
+}
+
+void StyledStreamWriter::writeCommentAfterValueOnSameLine(const Value& root) {
+ if (root.hasComment(commentAfterOnSameLine))
+ *document_ << " " + normalizeEOL(root.getComment(commentAfterOnSameLine));
+
+ if (root.hasComment(commentAfter)) {
+ *document_ << "\n";
+ *document_ << normalizeEOL(root.getComment(commentAfter));
+ *document_ << "\n";
+ }
+}
+
+bool StyledStreamWriter::hasCommentForValue(const Value& value) {
+ return value.hasComment(commentBefore) ||
+ value.hasComment(commentAfterOnSameLine) ||
+ value.hasComment(commentAfter);
+}
+
+std::string StyledStreamWriter::normalizeEOL(const std::string& text) {
+ std::string normalized;
+ normalized.reserve(text.length());
+ const char* begin = text.c_str();
+ const char* end = begin + text.length();
+ const char* current = begin;
+ while (current != end) {
+ char c = *current++;
+ if (c == '\r') // mac or dos EOL
+ {
+ if (*current == '\n') // convert dos EOL
+ ++current;
+ normalized += '\n';
+ } else // handle unix EOL & other char
+ normalized += c;
+ }
+ return normalized;
+}
+
+std::ostream& operator<<(std::ostream& sout, const Value& root) {
+ Json::StyledStreamWriter writer;
+ writer.write(sout, root);
+ return sout;
+}
+
+} // namespace Json
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